Return Value

The
length of left or right does not equal the number
of rows in this HermitianMatrixT.

Remarks

The Hermitian outer product of two vectors A and B
is defined as ABT + BAT. Where an outer product of
two vectors is in general not Hermitian, adding the transpose ensures that
the result is Hermitian.

The length of left must equal
the number of rows and columns of this instance.